Excessive liquid line

[TheSuperfan99]

I have an American hefeweizen that requires 3.5 volumes of co2. Which means that my co2 must be 20psi with my kegerator at 36 degrees. I'm coming up on 3 weeks of force carbonation, and will be hooking up my liquid line later this week.
I plan on my serving pressure being the same 20psi that I force carbonated with (I don't want to change regulator pressures when serving, and then turning it back up to maintenance pressure when finished) nor do I want the beer to off gas inside the lines during non use, creating co2 bubbles in my serving line.
I've already performed calculations based on a 20psi serving pressure. I'll need 17.75 ft of 3/16 serving line.
Since this is a converted refrigerator with cornie kegs I don't have enough vertical rise to my tap. The coil of line won't be going uphill all the way to the tap.
So, with this long-winded explanation, now my question. If I zip tie the coil of line together and set it on the floor of the refrigerator will bubbles form in the line because it's not going uphill? Or, will the fact that my carbonation and serving pressure will be the same the beer won't off gas in the line and create an "air gap" (co2)?

 

[day_trippr]

[...]
So, with this long-winded explanation, now my question. If I zip tie the coil of line together and set it on the floor of the refrigerator will bubbles form in the line because it's not going uphill? Or, will the fact that my carbonation and serving pressure will be the same the beer won't off gas in the line and create an "air gap" (co2)?

[edit] If your CO2 pressure versus temperature calculates to the same carbonation level as "original" the line length doesn't matter wrt losing carbonation in the lines. The line length is only important wrt pour quality.
As for where to stash the coiled line, unless you don't have the vertical room, you may want to set the coils atop the kegs.
It's what I've always done and it seems to work just fine...

Cheers!

 

[TheSuperfan99]

Just pulled the tap handle on the American hefe. Carbed and served at 20psi with 17.5 get of serving line. It was the best carbonated beer and best head on a beer I've ever had on my own kegs. I patiently carbd for 3 weeks. And today was the day. Huzzah!

 

[MagicMatt]

Also look into the swizzle sticks inserted into the liquid-out diptube if you plan to have highly carbed beers often. It can reduce the length you need, possibly as much as by 1/2.